Improved shoe for stamping machinery



v P. w.' GATES.

Shoe' for Stamping Madfiine'ry. No. 5 ,321. Patented July 10,1866.

Witnesses I EZeZtoT:

M,- 1 kiwi M .UNITED STATES PATENT OFFICE.

I. W. GATES, OF CHICAGO, ILLINOIS, ASSIGNOR TO HIMSELF AND D. R.

' FRASER, OF SAME PLACE.

IMPROVED SHOE FOR STAMPING MACHINERY.

Specification forming part of Letters Patent No. 56,321, dated July.10,1866.

To all whom it may concern:

Be it known that I, 1?. WV. GATES, of Ohicago, in the county of Cook andState of Illinois, have invented a new and useful Mode of Constructing aShoe for Stamping Machincry; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being hadto the accompanyin g drawings, forming part of this specification, inwhich- Figure]. is a central section of my improved shoe as it appearswhen connected to a stamphead of an ore crushing machine. Fig. 2 shows alike section of said shoe, the casting of it having just been completedin the ordi nary sand mold, the base of the shoe being poured first in.the mold. Fig. 3 represents a view of the improved shoe when the castingof the same has just been completed in an ordinary sand mold, but withthe stem of the shoe inverted and at the bottom of the mold, the metalcomposing the stem having been poured in the mold an instant prior topouring in the hard metal which composes the base of the shoe, as shownin working position in Fig. 1. Fig. 4 is a similar view to Fig. 2, butwith the base of the shoe cast in a chill-flask, while the stem is castin an ordinary sand mold. Fig. 5 is a plan view of Fig. 4 with the sandflask removed.

The object of my invention is to overcome the difficulty heretoforeexisting in that part of stamping machinery known as the shoe, mypresent improvement being in addition to those heretofore made by me.

In stamping machinery, where the shoe is made of hard metal and with astem, by means of which the shoe is connected to the stamphead, it is ofgreat importance to have the stem of soft metal, in order to readily andproperly turn it down, and so fit it that the shoe will be securely heldin position with the stamp-head, and also not snap off by reason ofbrittleness.

My present improvement secures all the advantages of a soft-metal stemand a hard-metal shoe, while at the same time the product of myinvention, as a whole, possesses all the advantages of an entire andhomogeneous casting, notwithstanding its parts are composed of metalspossessing different and distinct qualities of hardness.

In Figs. 2 and 3 my improved shoe is indicated as having been cast inthe common sand mold. In Fig. 2 the flask or mold A, with the inclosedsand B, is made to contain the entire casting, the lower portion of it(representedin blue tint and marked 0) composing the shoe, while thatpart indicated in dark color and marked D is the stem of the shoe, themetal of the same being poured in at the ingate e.

Preparatory to such casting I have two cupolas in operation, one ofwhich is ready to run very hardiron, while the other is readyto run softiron. I then, if the casting is to be made in the position indicated inFig. 2, first pour sufficient of the hard metal into the mold to formthe base or shoe O of the casting, and instantly thereafter pour intothe mold sufficient of the soft metal to constitute the stem D. Thepouring of the two molten metals bein gdone almost simultaneously, thesoft metal, .in the act of pouring, will flow into and infuse itselfinto the larger mass G, as indicated in Fig. 2, in which condition themass will become cool and integrated when cold, the same as if the wholewere composed of a single quality of metal, while at the same time thelower portion or shoe, 0, will be made of very hard or chill iron, andthe upper part or stem, D, of soft iron.

It will thus be seen that in the simple act of casting I produce a shoein a single piece of metal, which possesses all the qualities ofresistance to wear on its working-face, with the necessary softness ofmetal in its stem to admit of that part being cut, filed, or in anyproper way fitted for the purpose of forming a connection with the stamp-head F, as indicated in Fig. 1.

Sometimes it may be desirable to pour the hard metal into a chill-flask,as at E, Fig. 4, for the purpose of giving the hard metal additionalhardness, in which case the soft-metal stem D is formed in a sand mold,the same as in Fig. 2.

In Fig. 3 I have shown the shoe cast in a sand mold in an invertedposition. I prefer, however, to cast it in the position shown in Fig. 2.

I would here remark that although I have I shoeforstampingmachinery,producedby castdescribed the stem of my shoe as being made ing hard andsoft metal together while both of soft iron, I do not mean to confinemyself are in a molten state, the soft metal forming to such soft metal,for that part of my shoe thestemof the shoe, while the hard metalformsmight with advantage be made of other soft thebodyofthe shoe,substantially asdescribed. metals or alloys of metals.

Having thus described my invention what GATES I claim as new, and desireto secure by Letters Patent of the United States, is

As a new article of manufacture, a solid Witnesses J. L. FARGO, L. D.TURNER.

